Skip to content

Cheapest dish soap

As of July 22, 2026, the lowest price for dish soap on Amazon is $0.066/fl oz — the median is $0.40/fl oz across 51 tracked products. Prices re-checked continuously.

Good ≤ $0.24Median $0.40Min $0.066

🧮 Got a price? Check if it’s good →

Dish soap ranked by the real cost per fl oz — the unit that actually matters, not the size of the pack. We do the math so you compare true value.

💚 Best value right now$0.066 / fl oz· AjaxSee it →

51 live deals · cheapest per fl oz first

+100°
Amazon Basics Dish Soap
🧽Dish soap

Amazon Basics Dish Soap

$0.12Cost / fl oz
Price checked Jul 21 · confirm on Amazon🔥 Popular
pack price$6.25
subscribe & save$0.11−10%
💚 69% below median $/fl oz
See on Amazon
+92°
Mrs. Meyer's Clean Day
🧽Dish soap

Mrs. Meyer's Clean Day

$0.19Cost / fl oz
Price checked Jul 21 · confirm on Amazon
pack price$8.90$11.18↓20%
💚 54% below median $/fl oz
See on Amazon

What changed

From our own price checks — not sticker “was” prices.

Price tiers by cost per fl oz

TierCost per fl ozExample
Budget$0.066 – $0.24Ajax Ultra Liquid Dish Soap Vinegar and Lime…
Mid-range$0.24 – $1.01MRS. MEYER'S CLEAN DAY Liquid Dish Soap Refill
Premium$1.01 – $1.99Seventh Generation Dish Liquid Soap Free & Clear…
Cost per fl oz by brand

See our Best of 2026 picks →Cost-Per-Unit IndexUnit price calculator

How to buy dish soap for less

Dish soap is where “Ultra Concentrated” hides the real price — the small bottle can be the better buy. Cost per fl oz cuts through it, but concentration matters, so compare within the same strength.

  • Compare cost per fl oz, but check concentration. A 2× concentrated soap at a higher per-oz price can be cheaper in use because you dose less — read the “X the cleaning ingredients” claim.
  • The big refill bottle is far cheaper per fl oz than the sink-side bottle — buy the jug, refill the small one.
  • Store brands clean as well as Dawn for everyday dishes at roughly half the cost per fl oz; save the premium for baked-on grease.
  • Ignore scent/“brand” premiums on the commodity job — grease-cutting surfactant is cheap; you’re paying for fragrance and label above the base cost per fl oz.

How we rank dish soap

We take each listing’s last-seen price and divide it by the fl oz — the unit that actually matters here — so a big pack and a small one line up on the same scale. The cheapest per fl oz wins, not the biggest label or the lowest sticker price.

What we check

Cheapest isn’t always best value. For dish soap we surface the trust signal that separates the real thing from filler: $/fl oz.

Frequently asked questions

How is the cheapest dish soap calculated?
We take each listing's last-seen price and divide it by the fl oz — the unit that actually matters here — so a big pack and a small one line up on the same scale. The cheapest cost per fl oz ranks first, not the biggest label or the lowest sticker price.
How much do dish soap cost per month?
At 10 fl oz a month, the median price we track works out to about $4 a month — $48 a year. Buying at the cheapest price we currently track instead costs $1 a month, saving roughly $40 over a year.
What is the cheapest dish soap right now?
The best value right now is Ajax at $0.066 per fl oz — the lowest real cost per fl oz of the 51 live deals we track here.
What does cost per fl oz mean?
Cost per fl oz is a listing's price divided by its fl oz, so two products in different pack sizes compare on the same scale instead of by sticker price. It is the single number we rank dish soap by.